航空、航天科学技术
时断时续地下毛毛雨
As the conference came to an end, an on-and-off drizzle that fell on Colombo turned into a downpour.
CNN: A FAILURE AT THE TOP
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。